????:1????????????:??????????

2??????????

3???????????

4?2021?????????

5????????

?8?????16??????? (?)?????????,??????????????????,??????????????????????????????????????,????????????????????????????2019?????????????????11.9%?9%?????18.7%,??????7?????,????

???????,?????,??4335???????????????,??????????262????????????16?????????,?????????,?10??

????,???????????????????????????????,????0.0016????0.01,??????????????1/3??1/10?

?????,?19??,?20%? ???:???